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On a page developed with Joomla 3.0, Gantry Framework & Magnus Template everything has been running fine but when installing new extensions like rs_mediagallery , facegallery or rokgallery , the installation finishs well but then when trying to access the component to configure (ie: Components --> Rsmediagallery) it shows a blank page and firebug indicates an error " 500 Internal Server Error".

All the site is running well including another extensions already installed.

tmp and extension directories have the correct permissions.

If someone has an idea in order to solve this error, I thanks

Campo

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  • Try first uninstall and then re-install the extensions.
    – FFrewin
    Commented Oct 27, 2014 at 22:47
  • Can you set error reporting to "Development" (go to Global Configuration -> Server tab -> Error Reporting). If you see any error messages, please add them to your question.
    – johanpw
    Commented Oct 27, 2014 at 23:37
  • Yes. I set Global Configuration -> Server tab -> Error Reporting to Development and Maximum with identical results.
    – campo
    Commented Oct 28, 2014 at 0:30
  • I will uninstall then install this extension wirth error reporting = development in order to see if this ext is installed in the right way.
    – campo
    Commented Oct 28, 2014 at 0:35
  • OK. Uninstall was Ok. But when i tried to install this ext again, it shows the following msg: "An error has occurred. -1 Copy file failed". This msg must be related to directory permissions because a moved this app to a new folder. I'll check permision in order to try again.
    – campo
    Commented Oct 28, 2014 at 0:40

2 Answers 2

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I suggest getting your error log from the cpanel to see the problem. 500 errors are usually server side error. It might be you're installing on an unsupported version of PHP or a permission issue.

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mod_security can sometimes cause this type of behaviour.

Check with your hosting provider explaining the exact steps that cause the error or you may be able to temporarily disable mod_security by adding the following to .htaccess:

<IfModule mod_security.c>
SecFilterEngine Off
SecFilterScanPOST Off
</IfModule>
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